Igniting device for gas-stoves.



B. D. STEVENSON.

IGNITING DEVICE FOR GAS STOVES.

APPLICATION FILED MAY z2. 1911.

1,059,086. Patented Apr. 15, 1913.

3 SHEETS-SHEET 1.

@fi feaefwO/L B. D. STEVENSON.

IGNITING DEVICE FOR GAS STOVES.

APPLXOATION FILED MAY 22, 1911.

Patent-.ed Apr. 15, 1913.

3 SHEETS-SHEET 2.

B. D. STEVENSON.

IGNITING DEVICE FOR GAS sTovEs.

APPLICATION FILED MAY 22, 1911,

1,059,086. Patented Apr. 15, 1913.

3 SHEETS-SHEET 3.

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UNITED STATES PATENT OFFICE.

-BABTON D. STEVENSON, 0F HARVARD, ILLINOIS.

IGNITING DEYICE FOB GAS-STOVES. i

Specication of Letters Patent.'

Application led lay 22 V1911.

Patented Apr. 15,1913.

Serial No. 628,690.

specification.

My invention relates to certain new and useful improvements In an lgnitmg devlce lfor a gas-stove, and is fully described aniiv explained in the specificationaand shown in the accompanying drawings, in which:

F igurev 1 lis an elevation of vav gas-stove lwith my device in placethereon; lFlg. 2 is a section on the line'2 of Fig. 1,; Figs. 3 and 4 are horizontal sections showing themanner in which thehigh-tension terminals are led through the back of the stove to the burners; Fig.` 5 is atop plan-of the ignitin mechanism proper with .the cover -remov Y ;Fig. 6 is a rear elevation of the same; Fig. 7 1s a vertical 'section on the line 7 of Fig. 5,;v Fi 8 is fa detailed section on-fa larger sca e through'the contact devices; Fig. 9 1s anelevation of the primary contact to be engaged by "the switch-mechanism; Fig. '10 is an end view lof the vswitch-mechanism removed A frompl'ace; Fig. 11 is an elevation showing the partsillustrated inFigs. 9 andl 10 in their assembled relations, -and Fig. 12 is a diagrammatic view illustrating the circuits. p

Referring to theA drawings, 13 is a case having in its lower portion two batteries 14: and.

above these batteries an induction coil 15v to .the top of which is secured a longitudinallyextendin bar 16 the ends of which rest in notches 1. -in the sidesof the case, so as to holdthefnduction-coil removably in place.l `()ne1teriuina'lo1 the batteries 14 is ledV to a 'y contact spring 18 which,`when the induction-- `coil is inposition,` engages one ofthe pri- .mary binding posts thereof.- vThel other primary binding post 20 land the remaining terminalfof the battery are connected to two primary contacts 2l-'of springt-metal on -the insidewall of the case at one end .andat 'the rear that is, opposite the induction-coil,

these two contacts being J fully illustrated in Fig.l 9. Thisconstruction is'manifestly such 'that by clsing'the-connectionbetween these two contacts 21 in any way, the primary circuit throughthe induction-coill will be closed.

At the rear of the case and at the top is a switch or push-button mechanism, mounted in a frame,` having a top plate 22 projecting at its ends'and resting in notches 23 in the top 0f the case, two end-plates y24: and 25*- and a bottom plate 26. Between the, end plates are two primary bus-.bars 27, the ends of which are arranged to Contact with prif' mary contacts 2l so that by short-circuiting Athe primary bus-bars, the primary Acircuit Awill vbe closed. Beneaththe' primaryV busbars and at the front of the frame is asecondar bus-bar 28 connected' to one of the secon ary terminals of the induction-coil.

To the rear of this bus-bar, when the switch or push-button'mechanism is inl'Position, are located a series of binding posts 29, the inner ends of which are provided with metallic terminals extending inside the case and lying in the same plane with the secondary bus-bar 28. The remaining secondary terminal of the induction-'coil is attached to a ground spring 30. y

From the foregoing description it will be evident that if the primary 4bus-bars are short-crcuited and at the same time the secondary bus-bar be connected by any suitable mechanism with any one of the binding posts 29, a high-tenslon circuit can be taken out from the ground plate 3 0 and the binding osts 29 with winch thesecondary busbar appen to be connected. For the purpose of making these necessary connections,

a series of push-buttons 31 are provided,l

each being held up by a spring 3 2 and bearing against the top plate, of the switchmechanism frame.

against which is held a metallicplate 35 by means of a sleeve 36. A second sleeve 37 on l Each push-button`has a l'ong downwardly extending stem 33 terminating at its upper end in a shoulder`34 the lower end of the pin 33 affords a shoulder l againstwhich a movable lmetallic, plate 38 is held by means of a spring 39. This construction is such that as any iven, pushbutton is pressed the plate 38 will first `contact with the-secondary bus-bar and the seconda binding post 29 corresponding to the 'pushutton actuated. Further movement of `the push-button will com *ress thespring 39, the lost motion thus a orded between the plate 38 and the remainder of the pushbutton permitting the push-button to moveA down until the primary bus-bars are struck by the upper plate 35 at whichtime the circuit will be closed through the primary-coil and the secondary currentwill be available for lighting purposes.

The device is shown as applied to a gas stove of the common type provided with a shelf above the burners. Holes are drilled in the back-plate of the 'stovel to receive the -secondary binding posts 29, which:v are passed through these holes,the ground-plate 30 contacting with the metal back of the'stove so as to form an efficient ground.` This places the metallic ends of the'secondary binding posts well behind the .stove where there is little or no danger of theirvbeing accidentally struck and where they will be entirely out of the4 way and practically invisible. The secondary wires are attached to these binding posts and led down behind theback of the stove in any desired manner. At the level of the burners and beneath the gratings usually occurring above theiplane of the burners, other holes are drilled inthe backplate through which extend hollow' porcelain plugs40 having vcollars 41 on their front ends and reduced rear ends'42. Porcelain nipples 43 countersunk to receive the rear ends 42 of the plugs 4G/fit over the said 'rear ends, bolts 44 holding the twoy porcelain parts togetliei'and furnishing the meansat the rear for the attaclmientofA the wires from the secondary binding posts 29 and'at the front means for carrying spark-wires 45, the endsl of which are placed in close proximity to the burners. In case this spark is to be led to a forward burner, the construction is identical except that a longer bolt is used and an elongated porcelain tip 46 fitted to the collar 41 of the part 40 is used' in the manner illustrated. Thus the secondary wire isvcompletely insulatedand very substantially'supported until in close lproximity to the burner. This is byfar thcsimplest and mostconvenient method of supporting the secondary terminals of a gas-lighting device of the.character in question .of which I have any knowledge, for the reason that it can be readily applied to any stove now in common use, no special brackets or fittings are required for different types of stoves, the

insulation is as perfect as.can reasonabl be scribed in detail as the preferred form of my construction, but it is manifest that this prefel-red form can be modified to aconsiderable extent without departing from the principle of my invention, and therefore, by said accurate andqdetailed description, I donot intend lto limit myself thereto. exceptas pointed outin the following claims in vwhich it is intention to claim .all the novelty which is inherent in this construction lover the prior art. I y

I claim as new and desire-to secure by Letters Patent- 1. In a device of the'class teries andan induction-coil, a- `.air of primary. bus-bars connected `with tiie primarycoil of the induction-coil of the battery, a secondary bus-bar VVconnected to one end of the secondary-coil, a ground-plate connected to the other end of the secondary-coil, a seriesof secondary-binding posts having conducting terminals inthe plane of the secondary bus-bar, and a series of'push-buttons carrying each two plates, one in posit-ion to short-circuit thenprimary busfbars and the other in position to connect the secondary busbar to the corresponding secondary bind-ing posts. l

2. In a device of the class described, batteries and an induction-coil, a pair-of primary bus-bars connected with the-.primarycoil of the induction-coil of the battery, a secondarybus-bar connected to one end of thevv secondary coil, a-series of secondary# binding posts having connecting terminals in the plane of the secondary bus-bar, and a series of push-buttons carrying eachtwo plates, one in position to short-circuit the primary bus-bars and the other in position to connect the secondary bus-bar to the corresponding secondary binding posts, said second plate having a lost-motionconnection with the push-button and being arranged to engage. t-he parts it strikes before the firstnamed plate.'

In testimony whereof I havehereunto set my hand this 15th day of May, 1911.

BART. D. STEVENSON.

In the presence of two subscribing witnesses:

. R. A. JACOBS,

R. A. HEMENWAY. 

